void QgsMapCanvas::setCachingEnabled( bool enabled )
{
if ( enabled == isCachingEnabled() )
return;
if ( mJob && mJob->isActive() )
{
// wait for the current rendering to finish, before touching the cache
mJob->waitForFinished();
}
if ( enabled )
{
mCache = new QgsMapRendererCache;
}
else
{
delete mCache;
mCache = 0;
}
}
void QNetworkAccessHttpBackend::replyHeaderChanged()
{
// reconstruct the HTTP header
QList<QPair<QByteArray, QByteArray> > headerMap = httpReply->header();
QList<QPair<QByteArray, QByteArray> >::ConstIterator it = headerMap.constBegin(),
end = headerMap.constEnd();
QByteArray header;
for (; it != end; ++it) {
QByteArray value = rawHeader(it->first);
if (!value.isEmpty()) {
if (it->first.toLower() == "set-cookie")
value += "\n";
else
value += ", ";
}
value += it->second;
setRawHeader(it->first, value);
}
setAttribute(QNetworkRequest::HttpStatusCodeAttribute, httpReply->statusCode());
setAttribute(QNetworkRequest::HttpReasonPhraseAttribute, httpReply->reasonPhrase());
// is it a redirection?
const int statusCode = httpReply->statusCode();
checkForRedirect(statusCode);
if (statusCode >= 500 && statusCode < 600) {
QAbstractNetworkCache *nc = networkCache();
if (nc) {
QNetworkCacheMetaData metaData = nc->metaData(url());
QNetworkHeadersPrivate cacheHeaders;
cacheHeaders.setAllRawHeaders(metaData.rawHeaders());
QNetworkHeadersPrivate::RawHeadersList::ConstIterator it;
it = cacheHeaders.findRawHeader("Cache-Control");
bool mustReValidate = false;
if (it != cacheHeaders.rawHeaders.constEnd()) {
QHash<QByteArray, QByteArray> cacheControl = parseHttpOptionHeader(it->second);
if (cacheControl.contains("must-revalidate"))
mustReValidate = true;
}
if (!mustReValidate && sendCacheContents(metaData))
return;
}
}
if (statusCode == 304) {
#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
qDebug() << "Received a 304 from" << url();
#endif
QAbstractNetworkCache *nc = networkCache();
if (nc) {
QNetworkCacheMetaData oldMetaData = nc->metaData(url());
QNetworkCacheMetaData metaData = fetchCacheMetaData(oldMetaData);
if (oldMetaData != metaData)
nc->updateMetaData(metaData);
if (sendCacheContents(metaData))
return;
}
}
if (statusCode != 304 && statusCode != 303) {
if (!isCachingEnabled())
setCachingEnabled(true);
}
metaDataChanged();
}
